;;'use strict';var NFC={shrinkingUI:null,peer:null,share:function share(f,options){if(navigator.mozNfc){if(window.ShrinkingUI&&options){NFC.shrinkingUI=new window.ShrinkingUI(options.foregroundElement,options.backgroundElement);window.addEventListener('shrinking-sent',NFC.sendFile.bind(NFC,f));navigator.mozNfc.onpeerfound=function(evt){if(!evt.peer){return;}
NFC.peer=evt.peer;NFC.shrinkingUI.start();evt.preventDefault();};navigator.mozNfc.onpeerlost=function(){NFC.peer=null;NFC.shrinkingUI.stop();};}else{navigator.mozNfc.onpeerready=function(event){NFC.peer=event.peer;NFC.sendFile(f);};}}},sendFile:function(f){if(!NFC.peer){return;}
if(typeof f==='function'){var promise=f();promise.then(function(file){NFC.peer.sendFile(file);if(NFC.shrinkingUI){NFC.shrinkingUI.stop();}});}
else{NFC.peer.sendFile(f);if(NFC.shrinkingUI){NFC.shrinkingUI.stop();}}},unshare:function unshare(){if(navigator.mozNfc){NFC.peer=null;navigator.mozNfc.onpeerready=null;navigator.mozNfc.onpeerfound=null;navigator.mozNfc.onpeerlost=null;if(NFC.shrinkingUI){NFC.shrinkingUI.stop();NFC.shrinkingUI=null;window.removeEventListener('shrinking-sent',NFC.sendFile);}}}};